Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual classe de carro teve o título XI Coppa Acerbo?
 ###Tabelas: CREATE TABLE finances (finances_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Total Support and Revenue VARCHAR, Total Expenses VARCHAR, Increase in Net Assets VARCHAR, Net Assets at End of Year VARCHAR) CREATE TABLE racial_composition (racial_composition_id AUTO_INCREMENT PRIMARY KEY, Municipality (2010) VARCHAR, White (both Hispanic and Non-Hispanic) INT, Black (Both Hispanic and Non-Hispanic) INT, Amerindian (Both Hispanic and Non-Hispanic) INT, n Asia (Both Hispanic and Non-Hispanic) INT, Multiracial (Both Hispanic and Non-Hispanic) INT, Hispanic (Of any Race) INT) CREATE TABLE 4a_members (4a_members_id AUTO_INCREMENT PRIMARY KEY, High School VARCHAR, Location VARCHAR, Founded INT, Affiliation VARCHAR, Enrollment INT, Nickname VARCHAR, Division VARCHAR) CREATE TABLE top_league_table (top_league_table_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Order VARCHAR, Played INT, Drawn INT, Lost INT, Penalties INT, Points For INT, Points Against INT, Points Diff INT, Coach VARCHAR) CREATE TABLE race_winners (race_winners_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Driver/s VARCHAR, Class VARCHAR, Vehicle VARCHAR, Race title VARCHAR)  
SELECT Class FROM race_winners WHERE Race title = xi coppa acerbo